xov xwm

Tam sim no tib neeg muaj ntau txoj kev xaiv hauv kev tu tawv nqaij, tsuas yog cov khoom xyaw tshuaj pleev thaiv hnub muaj ntau dua 10 hom, tab sis qee qhov khoom siv kho mob zoo li kev tu tawv nqaij tiag tiag yuav ua rau peb cov tawv nqaij. Yog li yuav ua li cas peb xaiv cov khoom tu tawv nqaij zoo rau peb cov tawv nqaij? Wb tham txog benzophenone-4, yog ib qho tseem ceeb ntawm cov khoom siv tu tawv nqaij.

benzophenone-4 yog dab tsi?

Benzophenone-4yog benzophenone compound, hu ua BP-4, tshuaj formula C14H12O6S. Nws yog cov hmoov dawb lossis daj daj ntawm chav tsev kub thiab tuaj yeem nqus tau UV teeb ntawm 285 txog 325 Im. Raws li qhov dav spectrum ultraviolet absorber, BP-4 muaj qhov zoo ntawm kev nqus siab, tsis muaj tshuaj lom, tsis muaj teratogenic nyhuv, zoo lub teeb thiab thermal stability, thiab lwm yam., UV absorber BP-4 tuaj yeem nqus tau UV-A thiab UV-B. Nyob rau tib lub sijhawm, yog chav kawm I tshuaj pleev thaiv hnub pom zoo los ntawm Tebchaws Meskas FDA, Tebchaws Meskas thiab Tebchaws Europe muaj kev siv ntau zaus, feem ntau yog siv tshuaj pleev thaiv hnub thiab lwm yam tshuaj pleev thaiv hnub.

Uv absorbent BP-4yog non-toxic, non-flammable, non-explosive, easy to absorb noo noo in air, is a excellent performance of acidic aqueous UV absorbent, muaj zog nqus UV teeb. Nws yog dav siv los ua ultraviolet absorber rau dej-raws li polymer coatings thiab cov xim ntshav los tiv thaiv cov photocatalytic oxidation ntawm dej-raws li polymer txheej thiab xim liab; Nws yog cov tshuaj pleev thaiv hnub zoo rau cov tshuaj pleev ib ce thiab UV absorber los txhim kho huab cua tsis kam ntawm cov ntaub plaub.

Benzophenone yog siv dav hauv cov khoom siv hauv tsev xws li looj tsom iav dub, ntim khoom noj, ntxhua khaub ncaws thiab ntxuav cov khoom los tiv thaiv UV raug. Nws tuaj yeem paug cov dej haus thiab txav los ntawm cov ntim khoom noj mus rau cov khoom noj. Benzophenone yog siv nyob rau hauv ib co zaub mov ntim inks thiab tej zaum yuav tsiv mus nyob rau hauv cov zaub mov. Benzophenone tshwm sim nyob rau hauv tej yam khoom noj (xws li wine grapes thiab Muscat txiv hmab txiv ntoo) thiab ntxiv rau lwm tus raws li ib tug flavoring neeg sawv cev.

Hauv cov khoom siv tu tus kheej, benzophenone yog siv los ua cov tshuaj tsw qab lossis tiv thaiv cov khoom xws li xab npum los ntawm kev poob lawv cov ntxhiab thiab xim nyob rau hauv lub teeb ultraviolet. Benzophenone derivatives xws li BP2 thiab oxybenzone (BP3) thiabTom ntej: benzophenone-4 (BP-4)yog siv nyob rau hauv cov tshuaj pleev thaiv hnub. Oxybenzone yog siv los ua ultraviolet absorber thiab stabilizer, tshwj xeeb tshaj yog nyob rau hauv cov yas thiab tshuaj pleev thaiv hnub. Benzophenone thiab oxybenzone kuj tseem siv rau hauv cov ntsia thawv polish thiab di ncauj balm.

Dab tsi yog benzophenone-4 siv rau hauv kev tu tawv nqaij?

Uv absorbent BP-4 muaj qhov zoo ntawm lub teeb pom kev zoo thiab cua sov, thiab siv dav hauv cov tshuaj pleev thaiv hnub, cream, zib ntab, tshuaj pleev, roj thiab lwm yam tshuaj pleev thaiv hnub. Tshwj xeeb tshaj yog haum rau tshuaj pleev thaiv hnub, tshuaj pleev ib ce, pleev xim, qhov dav dav npaum li cas yog 0.1-0.5%. Cov koob tshuaj ib txwm yog 0.2-1.5%.

Uas absorberPEB-4yog yooj yim soluble nyob rau hauv dej, thiab cov aqueous tov yog acidic, yog li nws yuav tsum tau neutralized thaum siv. Kev daws PH ntau dua 9 yuav ua rau qhov nqus nqus dej kom nqaim, daim ntawv thov tseem ceeb ntawm cov tshuaj pleev thaiv hnub niaj hnub thiab lwm yam khoom siv tawv nqaij los tiv thaiv kev laus ntawm daim tawv nqaij los ntawm lub teeb ultraviolet.

Dab tsi yog benzophenone-4 siv rau hauv kev tu tawv nqaij?